#pragma once

#ifndef _NR_UTILS_H_
#define _NR_UTILS_H_

namespace numericalC{

	static float sqrarg;
#define SQR(a) ((sqrarg=(a)) == 0.0 ? 0.0 : sqrarg*sqrarg)

	static double dsqrarg;
#define DSQR(a) ((dsqrarg=(a)) == 0.0 ? 0.0 : dsqrarg*dsqrarg)

	static double dmaxarg1,dmaxarg2;
#define DMAX(a,b) (dmaxarg1=(a),dmaxarg2=(b),(dmaxarg1) > (dmaxarg2) ?\
	(dmaxarg1) : (dmaxarg2))

	static double dminarg1,dminarg2;
#define DMIN(a,b) (dminarg1=(a),dminarg2=(b),(dminarg1) < (dminarg2) ?\
	(dminarg1) : (dminarg2))

	static float maxarg1,maxarg2;
#define FMAX(a,b) (maxarg1=(a),maxarg2=(b),(maxarg1) > (maxarg2) ?\
	(maxarg1) : (maxarg2))

	static float minarg1,minarg2;
#define FMIN(a,b) (minarg1=(a),minarg2=(b),(minarg1) < (minarg2) ?\
	(minarg1) : (minarg2))

	static long lmaxarg1,lmaxarg2;
#define LMAX(a,b) (lmaxarg1=(a),lmaxarg2=(b),(lmaxarg1) > (lmaxarg2) ?\
	(lmaxarg1) : (lmaxarg2))

	static long lminarg1,lminarg2;
#define LMIN(a,b) (lminarg1=(a),lminarg2=(b),(lminarg1) < (lminarg2) ?\
	(lminarg1) : (lminarg2))

	static int imaxarg1,imaxarg2;
#define IMAX(a,b) (imaxarg1=(a),imaxarg2=(b),(imaxarg1) > (imaxarg2) ?\
	(imaxarg1) : (imaxarg2))

	static int iminarg1,iminarg2;
#define IMIN(a,b) (iminarg1=(a),iminarg2=(b),(iminarg1) < (iminarg2) ?\
	(iminarg1) : (iminarg2))

#define SIGN(a,b) ((b) >= 0.0 ? fabs(a) : -fabs(a))

	//#if defined(__STDC__) || defined(ANSI) || defined(NRANSI) /* ANSI */

	void nrerror(char error_text[]);
	//float *vector(long nl, long nh);
	int *ivector(long nl, long nh);
	unsigned char *cvector(long nl, long nh);
	unsigned long *lvector(long nl, long nh);
	double *dvector(long nl, long nh);
	float **matrix(long nrl, long nrh, long ncl, long nch);
	double **dmatrix(long nrl, long nrh, long ncl, long nch);
	int **imatrix(long nrl, long nrh, long ncl, long nch);
	float **submatrix(float **a, long oldrl, long oldrh, long oldcl, long oldch,
		long newrl, long newcl);
	float **convert_matrix(float *a, long nrl, long nrh, long ncl, long nch);
	float ***f3tensor(long nrl, long nrh, long ncl, long nch, long ndl, long ndh);
	void free_vector(float *v, long nl, long nh);
	void free_ivector(int *v, long nl, long nh);
	void free_cvector(unsigned char *v, long nl, long nh);
	void free_lvector(unsigned long *v, long nl, long nh);
	void free_dvector(double *v, long nl, long nh);
	void free_matrix(float **m, long nrl, long nrh, long ncl, long nch);
	void free_dmatrix(double **m, long nrl, long nrh, long ncl, long nch);
	void free_imatrix(int **m, long nrl, long nrh, long ncl, long nch);
	void free_submatrix(float **b, long nrl, long nrh, long ncl, long nch);
	void free_convert_matrix(float **b, long nrl, long nrh, long ncl, long nch);
	void free_f3tensor(float ***t, long nrl, long nrh, long ncl, long nch,
		long ndl, long ndh);

	//#else /* ANSI */
	/* traditional - K&R */
	/*
	void nrerror();
	float *vector();
	float **matrix();
	float **submatrix();
	float **convert_matrix();
	float ***f3tensor();
	double *dvector();
	double **dmatrix();
	int *ivector();
	int **imatrix();
	unsigned char *cvector();
	unsigned long *lvector();
	void free_vector();
	void free_dvector();
	void free_ivector();
	void free_cvector();
	void free_lvector();
	void free_matrix();
	void free_submatrix();
	void free_convert_matrix();
	void free_dmatrix();
	void free_imatrix();
	void free_f3tensor();
	*/
	//#endif /* ANSI */
}
#endif /* _NR_UTILS_H_ */
